/*
 *  Copyright (c) 1998, Regents of the University of California
 *  All rights reserved.
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *      * Redistributions of source code must retain the above copyright
 *        notice, this list of conditions and the following disclaimer.
 *      * Redistributions in binary form must reproduce the above copyright
 *        notice, this list of conditions and the following disclaimer in the
 *        documentation and/or other materials provided with the distribution.
 *      * Neither the name of the University of California, Berkeley nor the
 *        names of its contributors may be used to endorse or promote products
 *        derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
 *  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 *  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.demis.troll;

import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.demis.troll.helper.NameHelper;
import org.demis.troll.util.OneToOne;

/**
 * @version 1.0
 * @author <a href="mailto:demis27@demis27.net">Stéphane kermabon</a>
 */
public class RelationDescriptor {

    private final Log logger = LogFactory.getLog(RelationDescriptor.class);

    private ClassDescriptor leftDescriptor = null;

    private ClassDescriptor rightDescriptor = null;

    private String name = null;

    // Map<left,right>
    private OneToOne<PropertyDescriptor, PropertyDescriptor> properties = new OneToOne<PropertyDescriptor, PropertyDescriptor>();

    public RelationDescriptor() {
        
    }

    public ClassDescriptor getLeftDescriptor() {
        return leftDescriptor;
    }

    public void setLeftDescriptor(ClassDescriptor leftDescriptor) {
        this.leftDescriptor = leftDescriptor;
    }

    public ClassDescriptor getRightDescriptor() {
        return rightDescriptor;
    }

    public void setRightDescriptor(ClassDescriptor rightDescriptor) {
        this.rightDescriptor = rightDescriptor;
    }

    public void addProperties(PropertyDescriptor left, PropertyDescriptor right) {
        left.setContributeToRelation(true);
        right.setContributeToRelation(true);
        properties.add(left, right);
    }

    public Set<PropertyDescriptor> getLeftProperties() {
        return properties.getLefts();
    }

    public PropertyDescriptor getLeftProperty(PropertyDescriptor right) {
        return properties.getLeft(right);
    }

    public Set<PropertyDescriptor> getRightProperties() {
        return properties.getRights();
    }

    public PropertyDescriptor getRightProperty(PropertyDescriptor left) {
        return properties.getRight(left);
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        StringBuffer buffer = new StringBuffer();
        buffer.append(name);
        buffer.append("(");
        for (PropertyDescriptor property: properties.getLefts()) {
            buffer.append(property);
            buffer.append("->");
            buffer.append(getRightProperty(property));
            buffer.append(",");
        }

        buffer.append(")");
        return buffer.toString();
    }

    public String getMethodName(String methodName) {
        String plural = NameHelper.getInstance().toUpperCaseFirstLetter(name) + "s";
        String singular = NameHelper.getInstance().toUpperCaseFirstLetter(name);
        String element = leftDescriptor.getObjectName();
        String elements = leftDescriptor.getObjectName() + "s";
        String Elements = NameHelper.getInstance().toUpperCaseFirstLetter(leftDescriptor.getObjectName()) + "s";
        String Element = NameHelper.getInstance().toUpperCaseFirstLetter(leftDescriptor.getObjectName());
        if ("set".equals(methodName)) {
            return "set" + singular;
        }
        else if ("get".equals(methodName)) {
            return "get" + singular;
        }
        else if ("sets".equals(methodName)) {
            return "set" + Elements;
        }
        else if ("gets".equals(methodName)) {
            return "get" + Elements;
        }
        else if ("add".equals(methodName)) {
            return "add" + Element;
        }
        else if ("adds".equals(methodName)) {
            return "add" + Elements;
        }
        else if ("contains".equals(methodName)) {
            return "contains" + Element;
        }
        else if ("remove".equals(methodName)) {
            return "remove" + Element;
        }
        else if ("removes".equals(methodName)) {
            return "remove" + Elements;
        }
        else if ("removeAll".equals(methodName)) {
            return "removeAll" + Elements;
        }
        else if ("element".equals(methodName)) {
            return element;
        }
        else if ("elements".equals(methodName)) {
            return elements;
        }
        else {
            return name;
        }
    }

}
